<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>Scatter 3D - ECHARTS-GL</title>
    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
    <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
    <link rel="stylesheet" href="./common.css">
</head>
<body>
<div id="main"></div>
<script src="../node_modules/echarts/dist/echarts.js"></script>
<script src="../dist/echarts-gl.js"></script>
<script src="lib/jquery.min.js"></script>
<script src="js/commonUI.js"></script>
<script>
    var chart = echarts.init(document.getElementById('main'));

    $.getJSON('./data/population.json', function (data) {

        data = data.filter(function (dataItem) {
            return dataItem[2] > 0;
        }).map(function (dataItem) {
            return [dataItem[0], dataItem[1], Math.sqrt(dataItem[2])];
        });

        chart.setOption({
            globe: {
                baseColor: 'rgba(0,0,40,0.2)',
                globeOuterRadius: 120
                // viewControl: {
                //     autoRotate: false
                // }
            },
            visualMap: {
                max: 40,
                calculable: true,
                realtime: false,
                inRange: {
                    colorLightness: [0.05, 0.9]
                },
                outOfRange: {
                    colorAlpha: 0
                }
            },
            series: [{
                type: 'scatter3D',
                coordinateSystem: 'globe',
                data: data,
                silent: true,
                symbolSize: 4,
                blendMode: 'lighter',
                itemStyle: {}
            }]
        });
    });

    window.addEventListener('resize', function () {
        chart.resize();
    });

</script>
</body>
</html>
